US2020406109A1PendingUtilityA1

Golf club head

47
Assignee: BRIDGESTONE SPORTS CO LTDPriority: Jun 25, 2019Filed: Apr 28, 2020Published: Dec 31, 2020
Est. expiryJun 25, 2039(~12.9 yrs left)· nominal 20-yr term from priority
Inventors:Wataru Ban
A63B 53/047A63B 53/0454A63B 60/54A63B 53/06A63B 2053/0479A63B 2053/0491A63B 60/02A63B 2209/00A63B 53/0408A63B 60/52A63B 2053/0454
47
PatentIndex Score
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Claims

Abstract

A cavity back iron type golf club head includes a face portion, a back portion, and at least one reinforcing portion that extends from an upper edge portion of the back portion toward a toe-side portion of a top line.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A cavity back iron type golf club head comprising:
 a face portion;   a back portion; and   at least one reinforcing portion that extends from an upper edge portion of the back portion toward a toe-side portion of a top line.   
     
     
         2 . The golf club head according to  claim 1 , wherein
 the golf club head is a pocket cavity iron type golf club head in which a pocket is formed between a lower portion of a back surface of the face portion and the back portion, and   the reinforcing portion extends so as to cross above the pocket.   
     
     
         3 . The golf club head according to  claim 1 , wherein
 the reinforcing portion is formed by a member different from a remaining portion of the golf club head, and   one end portion of the different member is fixed to the upper edge portion, and the other end portion of the different member is fixed to the toe-side portion.   
     
     
         4 . The golf club head according to  claim 1 , comprising
 a plurality of the reinforcing portions,   wherein a width of the reinforcing portion in a direction intersecting an extending direction of the reinforcing portion is not less than 3 mm and not more than 10 mm.   
     
     
         5 . The golf club head according to  claim 3 , wherein
 the different member is a member of a material different from a material forming the back portion and the top line.   
     
     
         6 . The golf club head according to  claim 3 , wherein
 the different member is a member of at least one of soft iron, stainless steel, titanium, and an aluminum alloy.   
     
     
         7 . The golf club head according to  claim 3 , wherein
 the different member is a member having a higher specific gravity than a material forming the back portion and the top line.   
     
     
         8 . The golf club head according to  claim 1 , wherein
 an intermediate portion of the reinforcing portion in an extending direction of the reinforcing portion is separated from a back surface of the face portion.   
     
     
         9 . The golf club head according to  claim 1 , wherein
 a width of the reinforcing portion in a direction intersecting an extending direction of the reinforcing portion gradually decreases from the upper edge portion toward the toe-side portion.   
     
     
         10 . The golf club head according to  claim 1 , wherein
 a cross-sectional shape of the reinforcing portion in a direction intersecting an extending direction of the reinforcing portion is a C-shape open toward the face portion.

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